# _*_ coding : utf-8 _*_
# @Time : 2022/1/11 0011 19:38
# @Author : 7.xpath解析案例
# @Project : 小猿圈爬虫--4k图片解析爬取

import requests
import os
from lxml import etree
if __name__=="__main__":
    #UA伪装：将对应的User-Agent封装到一个字典中
    headers = {
        'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36'
    }
    #指定url路径
    url = 'https://pic.netbian.com/4kmeinv'
    # 获取响应数据
    response = requests.get(url=url,headers=headers)
    #手动设定响应数据的编码格式
    # requests.encoding = 'utf-8'
    page_text = response.text
    #数据解析：src的属性值 alt属性
    tree = etree.HTML(page_text)
    li_list = tree.xpath('//div[@class="slist"]/ul/li')
    #创建一个文件夹
    if not os.path.exists('./picLibs'):
        os.mkdir('./picLibs')
    #遍历标签数据
    for li in li_list:
        img_src = 'https://pic.netbian.com' + li.xpath('./a/img/@src')[0]
        img_name = li.xpath('./a/img/@alt')[0] + '.jpg'
        #通用的处理中文乱码的解决方案
        img_name = img_name.encode('iso-8859-1').decode('gbk')
        #print(img_name,img_src)
        #请求图片进行持久化存储
        img_data = requests.get(url=img_src,headers=headers).content
        img_path = './picLibs/' + img_name
        with open(img_path,'wb') as fp:
            fp.write(img_data)
            print(img_name,'保存成功')